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A crj-200 FMS did not proceed direct roa after ATC vectored the aircraft off the aldan 1 arrival then recleared direct roa for the transition.
| Attributes | |
| ACN | 1069284 |
| Time | |
| Date | 201302 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | RDU.Airport |
| State Reference | NC |
| Environment | |
| Light | Dusk |
| Aircraft 1 | |
| Make Model Name | Regional Jet 200 ER/LR (CRJ200) |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Route In Use | STAR SBV4 |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | FMS/FMC |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Deviation - Track / Heading All Types |
Narrative:
In cruise flight well outside roa we were inbound on the SBV4 arrival in rdu. ATC then issued us a vector off course about 10-15 degrees to the left. A few minutes later we were re-cleared direct to roa via the aldan 1 arrival. I loaded the arrival into the FMS and selected the roa transition. Prior to executing the change; I verified with the first officer and noted that roa was in the to line of the FMS. However for some reason the FMS did not give us a direct course but instead place the course to the right of the aircraft. In order to intercept the autopilot attempted to take a hard intercept to the right to get on course. I saw what was happening and reselected direct roa in the FMS to correct the problem. However due to the heading change ATC did query us if we were proceeding direct roa. ATC made no further issue or remarks and we proceeded to rdu uneventfully. Reliance to automation. Uncommanded response to input in the FMS. I would be more vigilant in ensuring the FMS is showing a direct to line to the selected fix.
Original NASA ASRS Text
Title: A CRJ-200 FMS did not proceed direct ROA after ATC vectored the aircraft off the ALDAN 1 Arrival then recleared direct ROA for the transition.
Narrative: In cruise flight well outside ROA we were inbound on the SBV4 arrival in RDU. ATC then issued us a vector off course about 10-15 degrees to the left. A few minutes later we were re-cleared direct to ROA via the ALDAN 1 Arrival. I loaded the arrival into the FMS and selected the ROA transition. Prior to executing the change; I verified with the First Officer and noted that ROA was in the TO line of the FMS. However for some reason the FMS did not give us a direct course but instead place the course to the right of the aircraft. In order to intercept the autopilot attempted to take a hard intercept to the right to get on course. I saw what was happening and reselected direct ROA in the FMS to correct the problem. However due to the heading change ATC did query us if we were proceeding direct ROA. ATC made no further issue or remarks and we proceeded to RDU uneventfully. Reliance to automation. Uncommanded response to input in the FMS. I would be more vigilant in ensuring the FMS is showing a direct to line to the selected fix.
Data retrieved from NASA's ASRS site as of July 2013 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.